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AleksAgata [21]
3 years ago
5

003 divided by 6.321

Mathematics
1 answer:
ziro4ka [17]3 years ago
5 0
0.47460844803037 this is the answer
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a square flower garden in Samantha's backyard has an area of 100 square feet how much fencing will she need to enclose the flowe
Arlecino [84]
If Samantha's backyard has an area of 100 square feet, and you need to know how much fencing to enclose the garden, you know you are looking for the parameter of the garden. To fine the parameter you have to know the length of the sides. Area of a square is length times width and length and width are the same value. So what you know the square-root of 100 is the value of each side. So each side of the garden is 10 feet long. To find parameter all you do is add up all four sides. 10+10+10+10 = 40 feet need to enclose the flower garden.<span />
5 0
3 years ago
Solve the system of equations: <br> X+y+z=5<br> -3x-4y+4z=15<br> 2x-y-4z=-8
atroni [7]

Answer:

  (x, y, z) = (3, -2, 4)

Step-by-step explanation:

The attachment shows a solution using a graphing calculator where the first equation is solved for z, and that expression is substituted into each of the other two equations. The solution to that system is (x, y) = (3, -2). Using these values in the expression for z, we find ...

  z = 5 -(3 +(-2)) = 4

The solution is (x, y, z) = (3, -2, 4).

__

Your graphing calculator and/or online tools can give you the reduced row echelon form of the augmented matrix representing the system:

  \left[\begin{array}{ccc|c}1&1&1&5\\-3&-4&4&15\\2&-1&-4&-8\end{array}\right]

__

If you're solving by hand, you can do the substitution described above to eliminate z from one equation. You can eliminate z from another equation by adding the last two:

  -3x -4y +4(5 -x -y) = 15   ⇒   -7x -8y = -5

  (-3x -4y +4z) +(2x -y -4z) = (15) +(-8)   ⇒   -x -5y = 7

This pair of equations can be solved for x and y in any of the usual ways. Using the second equation to substitute for x, for example, gives you ...

  -7(-5y -7) -8y = -5   ⇒   27y = -54   ⇒   y = -2

  x = -5(-2) -7 = 3

  z = 5 -(3) -(-2) = 4

_____

<em>Additional comment</em>

If all that is needed is a solution, we prefer a graphical or matrix approach. These take about the same amount of time. Both require a little additional effort to determine exact values when the solutions are not integers.

6 0
2 years ago
Pages 6 and 27 are on the same (double) sheet of a newspaper,
Ganezh [65]

Answer:

32

Step-by-step explanation:

the page numbers on the opposite side are ( 6-1 ) and (27+1 ) which is 5 and 28 = 32

7 0
2 years ago
We want to determine which point is closer to the origin: M (1, -3) or N (7, 9)
Neporo4naja [7]

Answer: M(1, -3)

Step-by-step explanation: Put coordinates on graph

3 0
2 years ago
1. Covert 4 g to mg.
Svetradugi [14.3K]

Answer:

1. 4 to 4,000mg

2. 14 to 0.14m

3. 450 to 0.45L

4. 1.5 to 150cm

5. 0.2 to 200mL

6 0
2 years ago
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